Iscr
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Análise transcricional dos genes do sistema ISC em EUCALYPTUS GRANDIS e AZOBACTER VINELAND
Os cofatores de ferro-enxofre [Fe-S] estão entre os mais versáteis e antigos cofatores enzimáticos encontrados na natureza. As células têm explorado as propriedades eletrônicas e estruturais destes cofatores inorgânicos para uma ampla variedade de atividades incluindo a transferência de elétrons, a catálise e a ativação de substratos. Um grande n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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2. Caracterização de mecanismos de resistência as quinolonas e sulfametoxazol/trimetoprima de isolados clínicos de Stenotrophomonas maltophilia / Characterization of mechanisms of resistance to quinolones and sulfamethoxazole/trimethoprim in clinical isolates of Stenotrophomonas maltophilia
Stenotrophomonas maltophilia é um bacilo Gram-negativo, não fermentador, considerado um microorganismo pouco virulento, relacionado principalmente a infecções associadas à assistência a saúde. A S. maltophilia apresenta um padrão de resistência intrínseca à maioria das classes de antibióticos. A droga de escolha para o tratamento das infecções
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/11/2011
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3. Estudo etnofarmacológico e fitoquímico das espécies medicinais Cleome spinosa Jacq, Pavonia varians Moric e Croton cajucara Benth
In this present work an ethnographic research was performed with 84 native medicinal specimens from the Litoral Norte Riograndense, from which two plants Cleome spinosa Jacq e Pavonia varians Moric were submitted to ethnobotanic, phytochemistry and pharmacologic investigations. Additionally, a phytopharmacological research of the medicinal specimen Croton ca
Publicado em: 2009
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4. Caracterização molecular de genes blaCTX-M presentes em Klebsiella spp. isoladas em hospital universitário do Brasil / Molecular characterization of blaCTX-M genes found in Klebsiella spp. isolated in brazilian university hospital
Entre as ß-lactamases, as enzimas CTX-M têm despertado atenção especial pela alta incidência e grande capacidade de propagação. Eventos como recombinação gênica, transferência plasmideal e multirresistência podem ser a razão da manutenção e da ampla disseminação dos genes blaCTX-M. Este é um trabalho retrospectivo que teve como objetivo car
Publicado em: 2007
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5. IscR, an Fe-S cluster-containing transcription factor, represses expression of Escherichia coli genes encoding Fe-S cluster assembly proteins
IscR (iron-sulfur cluster regulator) is encoded by an ORF located immediately upstream of genes coding for the Escherichia coli Fe-S cluster assembly proteins, IscS, IscU, and IscA. IscR shares amino acid similarity with MarA, a member of the MarA/SoxS/Rob family of transcription factors. In this study, we found that IscR functions as a repressor of th
The National Academy of Sciences.
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6. Small RNA-induced differential degradation of the polycistronic mRNA iscRSUA
Most polycistronic genes are expressed in a single transcript, in which each cistron produces a fixed amount of protein. In this report, we show the first example of differential degradation of a polycistronic gene induced by a small regulatory RNA (sRNA). Our data show that the iron-responsive sRNA, RyhB, binds to the second cistron of the polycistronic mRN
Nature Publishing Group.
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7. ISCR2, Another Vehicle for blaVEB Gene Acquisition▿
The expanded-spectrum β-lactamase (ESBL) gene blaVEB-1, identified worldwide in Enterobacteriaceae and Pseudomonas aeruginosa, is associated with either class 1 integrons or repeated elements. We report here the first association of blaVEB-1a with the insertion sequence ISCR2 in six Acinetobacter species isolates recovered from Argentina. That genetic struc
American Society for Microbiology (ASM).
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8. Spread of blaCTX-M-14 Is Driven Mainly by IncK Plasmids Disseminated among Escherichia coli Phylogroups A, B1, and D in Spain▿
Since its first description in 2000, CTX-M-14 has become one of the most widespread extended-spectrum β-lactamases in Spain. In the present Escherichia coli multilevel population genetic study involving the characterization of phylogroups, clones, plasmids, and genetic platforms, 61 isolates from 16 hospitalized patients and 40 outpatients and healthy volun
American Society for Microbiology (ASM).
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9. Metabolic Defects Caused by Mutations in the isc Gene Cluster in Salmonella enterica Serovar Typhimurium: Implications for Thiamine Synthesis
The metabolic consequences of two insertions, iscR1::MudJ and iscA2::MudJ, in the isc gene cluster of Salmonella enterica serovar Typhimurium were studied. Each of these insertions had polar effects and caused a nutritional requirement for the thiazole moiety of thiamine. Data showed that IscS was required for the synthesis of nicotinic acid and the thiazole
American Society for Microbiology.
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10. Characterization of a New Metallo-β-Lactamase Gene, blaNDM-1, and a Novel Erythromycin Esterase Gene Carried on a Unique Genetic Structure in Klebsiella pneumoniae Sequence Type 14 from India ▿
A Swedish patient of Indian origin traveled to New Delhi, India, and acquired a urinary tract infection caused by a carbapenem-resistant Klebsiella pneumoniae strain that typed to the sequence type 14 complex. The isolate, Klebsiella pneumoniae 05-506, was shown to possess a metallo-β-lactamase (MBL) but was negative for previously known MBL genes. Gene lib
American Society for Microbiology (ASM).